Cornell Cooperative Extension

Saratoga County
Japanese Knotweed
Asian Clams
Mute Swan
Water Chestnut
Round Goby

Aquatic

The following is a list of aquatic invasive species listed by animal and plant click on each name to read and view details.

Aquatic Animals

Common Reed– Phragmites australis

  • Eurasian Watermilfoil– Myriophyllum spicatum
  • Hydrilla– Hydrilla verticillata
  • Purple Loosestrife– Lythrum salicaria
  • Rock Snot/Didymo– Didymosphenia geminata
  • Water Chestnut– Trapa natans
  • Yellow Flag Iris– Iris pseudacorus

    • Wetland Plants:

    PROHIBITED

    Frangula alnus (Rhamnus frangula) Smooth Buckthorn
    Glyceria maxima Reed Manna Grass
    Iris pseudacorus Yellow Flag Iris
    Lythrum salicaria Purple Loosestrife
    Murdannia keisak Marsh Dewflower
    Phragmites australis Common Reed

    Aquatic Plants:

    PROHIBITED

    Cabomba caroliniana Fanwort
    Egeria densa Brazilian Waterweed
    Hydrilla verticillata Hydrilla/ Water Thyme
    Hydrocharis morsus-ranae Frogbit
    Ludwigia hexapetala (L. grandiflora) Uruguayan Primrose Willow
    Ludwigia peploides Floating Primrose Willow
    Myriophyllum aquaticum Parrot-feather
    Myriophyllum heterophyllum x M. laxum Broadleaf Water-milfoil Hybrid
    Myriophyllum spicatum Eurasian Water-milfoil
    Nymphoides peltata Yellow Floating Heart
    Potamogeton crispus Curly Pondweed
    Trapa natans Water Chestnut

    Fish:

    PROHIBITED

    Channa argus Northern Snakehead
    Channa marulius Bullseye Snakehead
    Channa micropeltes Giant Snakehead
    Clarias batrachus Walking Catfish
    Gambusia affinis Western Mosquitofish
    Gambusia holbrooki Eastern Mosquitofish
    Hypophthalmichthys harmandi Largescale Silver Carp
    Hypophthalmichthys molitrix Silver Carp
    Hypophthalmichthys nobilis Bighead Carp
    Misgurnus anguillicaudatus Oriental Weatherfish
    Mylopharyngodon piceus Black Carp
    Neogobius melanostomus Round Goby
    Petromyzon marinus Sea Lamprey
    Proterorhinus semilunaris (P. marmoratus) Tubenose Goby
    Tinca tinca Tench

    Aquatic Invertebrates:

    PROHIBITED

    Bellamya chinensis (Cipangopaludina chinensis) Chinese Mystery Snail
    Bellamya japonica Japanese Mystery Snail
    Bithynia tentaculata Faucet Snail
    Bythotrephes longimanus (B. cederstroemi) Spiny Water Flea
    Cercopagis pengoi Fishhook Water Flea
    Corbicula fluminea Asian Clam
    Crassostrea ariakensis Suminoe Oyster
    Didemnum spp. Carpet Tunicate
    Dreissena polymorpha Zebra Mussel
    Dreissena rostriformis bugensis Quagga Mussel
    Eriocheir sinensis Chinese Mitten Crab
    Hemigrapsus sanguineus Asian Shore Crab
    Hemimysis anomala Bloody Red Shrimp
    Orconectes rusticus Rusty Crayfish
    Potamopyrgus antipodarum New Zealand Mud Snail
    Rapana venosa Veined Rapa Whelk
    Styela plicata Asian Sea Squirt

    Algae and Cyanobacteria:

    PROHIBITED

    Caulerpa taxifolia Killer Green Algae
    Didymosphenia geminata Rock Snot/Didymo
    Prymnesium parvum Golden Algae

    REGULATED

    Cylindrospermopsis raciborskii Cylindro
    Grateloupia turuturu Red Algae

    Last updated February 6, 2024

    Aquatic

    NYS Watercraft

    Adult emerald ash borer, Agrilus planipennis Fairmaire, 1888

    Visit NYIS.INFO, the website of the New York Invasive Species Clearinghouse and the Cornell Cooperative Extension Invasive Species Education Program (CCE ISP). NYIS.INFO is your gateway to science-based information, breaking news, and innovative tools for coping with biological invaders in New York. NYIS.INFO links scientists, local, state and federal resource manages, policy setters, educators, and grassroots efforts to help you become part of the battle against invasive species in New York.

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